You can be sure that these matters are true, because we apostles ourselves witnessed that our Lord Jesus Christ is supremely great, and also because what the prophets say about him is completely reliable.

2 Peter 1:16-21

16 We apostles told you that our Lord Jesus Christ acts powerfully and that he is coming back some day. We were not basing what we told you on stories that we had cleverly ◄invented/made up►. Instead, we told you what we ourselves saw with our own eyes, that the Lord Jesus is supremely great. 17 God, our Father, greatly honored him when God’s great glory/brightness surrounded him, and God [MTY] said, “This is my Son, whom I love very much; I am very pleased with him.” 18 We (exc) ourselves heard God [MTY] say that from heaven, when we were with Christ on that holy/sacred mountain. 19 We also have the Scriptures that the prophets wrote about Christ long ago, which are completely reliable/trustworthy. You should ◄pay attention to/think carefully about► what they wrote, because what they wrote enables you to know whether what is taught to you is true or whether it is false [SIM], like a lamp that is shining in a dark place enables people to see where they are going [SIM]. You should ◄pay attention to/think carefully about► what they wrote until our Lord Jesus Christ comes back and enables you [SYN] to know God fully, which will be like when [MET] ◄a day dawns/daylight comes► and the morning star rises and we can see it clearly. 20 It is important that you realize that no one can interpret/explain by himself the meaning of what the prophets wrote in the Scriptures without the help of God’s Spirit (OR, no part of the Scriptures originated with the prophet himself), 21 because no human beings decided to make those prophecies. On the contrary, those who spoke messages from God did that because it was the Holy Spirit who caused them to do it, and therefore the Spirit must help us to interpret/understand their meaning.